use strtod() instead of strtof()

git-svn-id: http://www.varnish-cache.org/svn/trunk@2997 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/vtc_http.c

@@ -589,7 +589,7 @@ cmd_http_timeout(CMD_ARGS)
 	CAST_OBJ_NOTNULL(hp, priv, HTTP_MAGIC);
 	AN(av[1]);
 	AZ(av[2]);
-	hp->timeout = strtof(av[1], NULL) * 1000.0;
+	hp->timeout = strtod(av[1], NULL) * 1000.0;
 }
 
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